Question

how could the modern periodic table remove various anomalies of Mendeleev's periodic table ???????
help me with this please....................

Answer 1

most of mendeleevee's defects  are removed in the modern periodic table if  the basis of classification of elements is changed from atomic weights to atomic numbers.

Answer 2

In the modern periodic table, atomic number was used as the fundamental basis for classification. This explained and removed various anomalies of Mendeleev's periodic table. Position of cobalt and nickel was justified.